.col-sm-3.col-md-2.sidebar
				ul.nav.nav-sidebar
					li.active
						a(href='/firmware')
							| 固件
							span.sr-only (current)
					li
						a(href='/device_monitor') 设备状态
					li
						a(href='/device_record') 设备历史
					//li
						a(href='#') Export
				//ul.nav.nav-sidebar
					li
						a(href='') Nav item
					li
						a(href='') Nav item again
					li
						a(href='') One more nav
					li
						a(href='') Another nav item
					li
						a(href='') More navigation
				//ul.nav.nav-sidebar
					li
						a(href='') Nav item again
					li
						a(href='') One more nav
					li
						a(href='') Another nav item